Scientists have created the first detailed maps of the outer edge of the sun's atmosphere, a shifting boundary where solar material breaks free of the sun's magnetic grip and streams out into space.
The new maps, built using close-up measurements from NASA's Parker Solar Probe along with data from more distant spacecraft, show that this boundary grows larger, rougher and more jagged as the sun becomes more active, periods in its cycle that are marked by increased sunspots and solar flares.
